Electricity Flashcards
What is electricity?
Electricity is the movement of current around in a circuit
What is the symbol for current
I
What is current measured in
Amperes (A)
What is the formula for current
I = V/R
What is a series circuit
A series circuit is a circuit that has only one path for current to flow without any branches
What is a parallel circuit
A parallel circuit is a circuit that has multiple paths for current to flow known as branches
What are some advantages of parallel circuits
- Components in the circuit can be turned on and off independently.
- When one component breaks down, the rest of the circuit continues to work. Unless it is the main battery or the switch.
How does current flow through a parallel circuit
The individual branches all collectively add up to the total amount of current flowing in the circuit.
What is the symbol for voltage
V
What is voltage measured in
volts
What instrument measures voltage
Voltmeter
Sometimes, we refer to sources of energy like cells, batteries or power supplies as
The supply
Most components have a
voltage rating
How does voltage flow through a series circuit
The components add up to the total voltage.
What happens to the voltage when you add more components in a series circuit
The components will get a smaller share of the voltage
